Field Conditions in a policy - Using Wildcards

[MikaelJcSoderberg]

Can "like" be used against a field?
More specific like this, against an array?
"if": { "allOf": [ { "field": "type", "equals": "Microsoft.Network/privateEndpoints" }, { "count": { "field": "Microsoft.Network/privateEndpoints/privateLinkServiceConnections[*].groupIds[*]", "where": { "field": "Microsoft.Network/privateEndpoints/privateLinkServiceConnections[*].groupIds[*]", "like": "sites-*" } }, "greaterOrEquals": 1 } ] }

 I need to create a custom policy that is for Private DNS for App Service Slots.
 There is no built in policy for this and none in Entrerprise Scale.
 
 What makes these private endpoints so difficult is that there is no fixed GroupID, but rather follows this standard:
 'sites-${slot.name}'